tv [untitled] September 14, 2010 10:30am-11:00am PST
digitized it so if any portion lies within these zones. if you tell me your address, i can tell you whether you lie it in. >> there's a book. >> 558-6205 and the clerk or me will take the book and look it up and say, yes, you lie within a particular zone >> i am the manager of a large condo minnium project. it was built in 1963. it's steel and concrete >> there's a difference between structural steel and rebarb. >> it's steel columns. thank you goodness.
>> 19 stories and i live across the street in a building that was built i believe in 1920 and i brought my staff here because we want to, as a team, be prepared with our building and the owners who live there. >> so her question is, how can someone find out what they should be prepared for? >> the first thing is to see if the there are original plans for their building >> should they hire someone >> someone need to verify if you are structural steel frame. there's a high likelihood there's a plan. if you are a concrete frame, you have a set of concerns.
>> the first thing, i recommend everybody do this. get a complete set of documents for your building from accessor's office and other office in a city and put them in a notebook and you have all your documents. here, you can ask to get all the permits, plans, job cards, sign off sheets. special inspection. get everything. there's no reason why the city should be a source of this. then, if you ever want to be a building expansion, you have the documents. you can have that done as well. >> you said something about getting plans for your building. what if you are in one of the 50 percent that were built a long time ago? i have a 1903 building >> most the plans and permits
for pre-1906 were destroyed in the fire. except for the larger buildings. many of the plans are available in berkeley. most of those were destroyed. >> there's not much there. >> you can also go back and get original water department records >> actually, the story is, the city had 2 water companies that were privately owned. spring valley and another one. their headquarters were at crystal springs.
that was actually the ceo. he wanted to build his house. their stuff was held outside of the city. after the 06 earthquake, one of the reports by the city was, all the fire hydrants were tied to spring valley. the city said this is crazy. they actually put in a second war supply and municipalized. all the records were transferred to the water department, they are at 1155 market and they are all the way back to 1868. it will be $0.37 to hook up
with your water >> also on your question, the cost in having a structural engineer take a look at your building is a very, very small percentage of the building's value. i think whether we have a large condominium, your building is static and the type of soil you're silting on and certain types of deterioration, and once you have that inspection done, you will sleep much better and make rational decisions on how you want to
priorityize. >> i totally agree with you, the plans are part of the history. would i be able to get them? >> they have the water hook up and the date your building was legalized. >> if it's an apartment building, most engineers know where you are in the soil conditions and can give you an expectation of the performance. most wood frame believes do well on the first, second and third floors. the upper stores act as a rigid block. but the garage level is an open floor plate. the total drift is a thing you
can look at without paying too much attention. if the building is stiff. instead of it being uniform, can all be forced to that lowest story. you are standing there and someone knocks your knees out and you fall down. that's what can happen to soft story buildings. >> i think a lot of us don't pay enough attention to the nonstructural damage. here we are in this room, nonstructural damage can be to the sealing, so here's a story. in the 1989 earthquake, that's
the day the marriott hotel opened. it has that little bar at the top. up at the top of building, it swayed back and forth and the ceiling planes shaved off a sprinkler and it flooded the top floor. >> it's a big problem. in north ridge, it was a huge problem. there was tremendous losses because your shoot rock gets wet. it's like having a flood. we are on a group trying to look at all the issue in san francisco and make recommendations. whether it responds and does well. the subsequent issue is fire, which we haven't talked about
here. with fire goes gas line breaks and water line breaks not being able to protect the structure once it happens. all those utility things come into play. as a homeowner's association, you have to anticipate as a resident of san francisco, there's going to be a lot of ground deformation and our utilities will have problems. we recently had window storms and while pg and e has done a wonderful job, there will be breaks. you will be able to camp in your argument. it would be like you went away for a long time for a camping
trip. you will be able to change the thinking about where people go. one of the big issues in katrina, people were forceed to evacuate. if we had a large fire. we might have to force an evacuation. >> one the things we're trying to develop is an expectation, this is our bottom line expectation for building performance. your building, while it might not be damaged. will it be sufficient to camp out it? >> we are not quite there yet. >> that's the kind of expectation. >> i think we should pass this along to the audience. there should be design
standards. there's a discussion, what should our design standards be for new construction? and the building department, we on caps are going to say, what standards should those be? and there's a group of us that have come up with a concept that hasn't been universally adopted of at some point in the future, this might be 15, 20, 25 years out, where our retrofits and our renovations are implemented at that point. it's not going to happen within next week. but where occupants of buildings, 95 percent of the population can expect to shelter in place within 12 hours of an earthquake. that's where a group of us feel
we should be designing towards. who's going to benefit? these are details of what we're trying to figure out and address. >> as a general contractor, i see hundred year old buildings and they have brick foundation or inadequate foundation. minimal concrete. everything is done with stainless steel and granite. but the next door neighbor could have brand-new. you are still vulnerable. i understand on commercial buildings we have umb restrictions. otherwise the city will come in. >> if someone fails to upgrade, we with would make them do it.
>> what about residential? if you have a monster next to you? >> there are no retroactive requirements. i think i might take issue with a next door neighbor. >> my client should hire someone. but you have a monster on full bricks. >> you can, if you have a risk, next to a very tall building, that building can give you hazards. you can also be on the other extreme. i would tell you to leave the brick building in place. the performance of your building will be way on down the food chain.
i would also say that just because your building survived a 1906 earthquake, >> it wasn't a big earthquake. the building was built in 1989. there are a lot of large buildings that did and there are a lot of didn't. >> i can talk to our insurance agent and says this is a serious one that comes up. we would not have enough to pay with everybody in the area. >> that has to do with cea. the amount of money they have in reserves is based on a 20-year return cycle. they haven't had 20 years >> our buildings are 80 or 90 areas old. our agents said, we will merely
pay you $120 per square foot. if that should fall down, we won't be able to pay out every client. it doesn't make sense. that's why we choose not to purchase >> there are a lot of things that come into play with that. when you pay a premium, you are paying into a reserve. so the cea builds up a reserve. they can't build up the reserve otherwise. that's how their building it. the national flood insurance is a public pool. the same thing is true there. they didn't have enough in their reserves to pay out the returns. congress had to pass legislation to authorize the
replenishment. that's how these pools are set up. government is involved in how the additional funding comes. i am not specific with how it works in california. part of the reason states are putting this up as opposed to a company that does this. >> so, how do we as a homeowners or renters know who is a sound structural engineer? >> how about i answer since i'm not an engineer. you can take comfort, we in san francisco have the largest community of seismic activity and structural engineers. we have a lot of concerned
citizens that aren't engineers that are asking questions like you're asking. i think the essential questions on how your building is going to do, there's going to be a lot of consensus on any group of engineers on how your building is likely to perform in terms of getting on the margins of the issues, the percentage of damage your building might have or specific issues in terms of repair, there might be agreement on that. i think the science and the art are to the point for the big questions and big answers, there's a lot of consensus on that. i would take comfort on that. >> i agree with that. >> i think it was a joke,
engineers talking about them. our buildings are not that difficult to access. people would be able to point out 90 percent with clear consensus. there might be differences on details like brick foundation. there are things people would see as unique. you should have comfort, i don't know, if it's the registered structural >> it's abag.gov. within the earthquake section, there's information about retrofitting wood structures and a list of engineers.
a lot of these are single family. i think there are engineers listed there too. i might be wrong. it's a great resource and the associations staff went through and looked at them. if you are a contractor, you might want to get in there. it's free advertising. >> i have to say, in san francisco, we have so many difficult buildings. these are all one off buildings. it requires an engineer to take a look. >> not just a contractor >> not just prioritize. >> just going straight to a contractor. >> i said that with a caveat. that's for a single-family,
cripple wall, >> yes, i am a contractor. i find in the public, there's a lot of confusion. could you talk about the generally standards of retrofitting. i think people need to understand, the generally accepted standards to which you can strengthen a building. >> basically, there's a spectrum all the way from 1886, whatever their performance might be. meet what the state of the art is or what the future code might be. we have this range of potential. someone says, i needed code. you mean 1908?
1930. or 2007 or proposed 2009. so there's a huge spectrum. san francisco has made a determination. >> officially retrofitted. >> it should be 75 percent of the current 2007 code. okay. 75 percent, we say, we're going to call that collapse prevention standard. >> you can out least stay in your house >> it will be referencing this standard. 75 percent of the current code. it's a real wide range. if you use the special procedures, you could find it
for bricks and each type of buildings and structures. >> there are buildings that have been retrofitted and as a group, we say, maybe they are not deserving of being called 104 s buildings. if you are a licensed structural engineer, you can give people some idea. if you retrofit the garage, you can stay in the upper floors. then it becomes an art. you want to talk to a structural engineer. some of the high rise buildings, we were able to accurately model it down to 7
figures. we designed buildings down to that level the accuracy. it's an art and you want to talk to someone that does this for a living. >> i couple of final comments. one the best things is to help you prioritize. pat and i have looked at hundreds of earthquake buildings, may be thousands, the smallest amount of work you do, as an enormous return. >> 89, there was a building, in marina, they built opposite buildings. i went into one, had no damage. not a lick. the building next to it, identical, trash. the difference was the guy put
on anchor bolts. just the fact he put in anchor bolts. he was staying there. >> i have seen the same thing with 2 sheets of plywood. i want to mention, typical san francisco buildings. we have a huge variety. we have things in the middle of the midblock held up by adjoining buildings. it's held up. it can't fall down. >> so if you live in the midblock, we have corners and have almost all agreed. wood framed soft story buildings, poses substantial hazards. they have few interior partitions. this is a serious hazard.
now only do we potentially lose a believe, but the neighborhood serving grocery store. these have potential for enormous impact. how do we reduce that. here's another example. we have these huge variety buildings. this thing is held up with toothpicks. how does it stay up with wind loads? we have things with marginal maintenance and i think a chimney is a significant hazard. think about how to brace your chimney. we don't want to have people being in there's earthquake
shacks. we don't have plans. we don't have a plan what we're going to do for housing. >> we know we don't want to be in formaldehyde trailers. >> i want to use the word plan. i will say, i think one of the things we do in our life. we plan for retirement. you think about social security. your children who might take care of you. any 401 k. you have to look at earthquakes and make a plan. you need to think about the things to have access. backing up your hard drive. have been your family on the east coast have copies of valuable documents so they are not lost and also this issue of risk. how much risk do you want to
retain? don't invest in retrofitting if you financially don't need that. if you don't have investment in that structure. it might not be significant for you. take a holistic view. >> the american red cross has a plan. you can get only at red cross.org. they have planning for your family. contact information, making sure there's a central contact. in my case. there's family in the east
coast. >> all of the systems get flooded and cell towers are going to go down. they have a limited life. so if you're able to recharge your cell phone. the system might go down texting is quite possible to do. people in katrina were able to do that. having a central point of contact to say, i am okay. that person can receive that information. your grandmother may not be the person to do that. no offense grandma. think holisticly when you think about the future. what it's like to live. imagine living in a disaster for several weeks >> thank you for coming today and we hope this has enlightened you.
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